The WTFoxx Octave Fuzz PCB is a clone of the famous Foxx Tone Machine—an awesome fuzz that I can only describe as soft-and-fuzzy or as gritty-and-nasty as you want it to be. Match the diode pairs to get a superb octave-up with the flick of a switch, over a basis of fuzzy carpet of Big Muff proportions. The PCB is also wide enough to fit sideways in a 1590B, for those daring enough to attempt to install it like the original FTM!
Let me get a little personal here: this is the pedal circuit that started it all for me. Several years ago, I began my pedal acquisition journey and started modelling my first real, tricked out pedal board after Justin Chancellor’s. I was able to find many of the necessaries and usual suspects locally—your Boss Chorus, Delay, and Flanger, your ProCo Rat, and MXR Bass Envelope Filter were all more or less readily available. But some of the seemingly crucial fuzzes such as the Colorsound Tonebender and the Foxx Fuzz Wah Volume were nowhere to be found locally.
And then I had the wild idea of building my own pedals. Why not?
So with that thought, I began researching. The Foxx Tone Machine is a high gain, silicon transistor fuzz that came out in the early 1970’s. From a bird’s eye view, four transistors and two pairs of clipping diodes bears a resemblance to that other four-transistor high-gain silicon overdrive, but in terms of its circuit topography it is a very different beast. Whereas the BMP is composed of four nearly identical gain stages, the Tone Machine looks almost like a Tonebender with an additional gain stage after the tone control. Throw in the fact that the Tone Machine also achieves an obvious octave-up effect thanks to the Germanium diode pair, and the two are completely different animals.
After many trials and many errors, the day I finally got a working circuit was a day I will not soon forget. The Foxx is fuzzy, warm, and rough around exactly the right edges. It sat really nicely in the mix with several of my bands I was playing bass for at the time, either with the octave-up mode engaged or without. And guitarists in the know swear by it, as it yields a wide range of possible sounds from smooth solos to harsh and jangly punk riffs.
Again, this was the circuit that inspired me all those years ago to begin building pedals in the first place. Today, I am more than happy to share that inspiration in the form of this intuitively laid out WTFoxx Octave Fuzz PCB. Happy Building!
Note that this is the price only for the circuit board. You will need to source your own parts.